docker exec -it 094623ce4e38 bash 相应的docker ID号；
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl join_cluster rabbit@rabbitmq1
rabbitmqctl start_app
bash-4.3# rabbitmqctl cluster_status
Cluster status of node rabbit@rabbitmq1
[{nodes,[{disc,[rabbit@rabbitmq1,rabbit@rabbitmq2,rabbit@rabbitmq3]}]},
{running_nodes,[rabbit@rabbitmq2,rabbit@rabbitmq3,rabbit@rabbitmq1]},
{cluster_name,<<"rabbit@rabbitmq1">>},
{partitions,[]},
{alarms,[{rabbit@rabbitmq2,[]},{rabbit@rabbitmq3,[]},{rabbit@rabbitmq1,[]}]}]
